60% is the change from 30 to 48
Calculation steps:
[( 48 - 30 ) ÷ 30] x 100 = 60%
Formula
Percentage change = [(48 - 30) / 30] x 100
Subtract the new number by the original number
48 - 30 = 18
18 ÷ 30 = 0.6
0.6 x 100 = 60%
Example